Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Fulica americana 169
Jan 14 Eliso, Calif., Campus, Alameda Co., Calif.
cauliflower leaves, parsley etc into the pond. By 1 p.m. all except
the parsley, cauliflower and beet leaves had been cleaned up. So at about 4:30
p.m. I dumped in another pail full of greens, mostly turnip tops, lettuce
and onions. The birds immediately sailed into the food and were
frenzy tearing things apart.
There seems to be a definite pattern of preferences of the foods offered:
Swiss chard rates first, then in order lettuce, especially the white base,
veins; onion greens and bulbs; cabbage leaves, but not the veins; apples, potatoe
peels, carrot tops, cauliflower leaves, the green parts without the veins; beet
tops, and lastly, parsley. On the least lot a cucumber- and some turnip tops and celery were thrown in but I haven't had time to observe the preference ratings.
I also noted today that several birds were picking up plant debris and searching underneath for insects etc. That seems to be a behavior common to most or all coots. They seem to eat more grain when an abundant greens supply is present, but grain is secondary to the greens.
I have noticed a very definite upsowing in the amount of food